Making use of woody oil-bearing plant is not only able to relieve our country energy shortage but also improve relative fragility of our country and promotes new rural construction .

开发木本油料生产植物液体燃料不仅可以缓解我国能源短缺，而且可以改善我国相对脆弱的生态系统并促进社会主义新农村建设。

To relieve the shortage of salt, people have begun to extract it from nitre .

他们为了解决食盐的缺乏， 进行了硝盐的制造。